What is Chamillionaire 's song <True> based on? Is is based on some national anthem?

Question

See topic title, I can't seem to figure where this beat comes from...

I'm talking about the beat that plays in the background, I've heard that before and I think it's some kind of national anthem that they borrowed for the purpose of the song...

Answer 1

I think that's the beat from "the ants go marching in.." that's all I remember..lol..